BMW 2 Series Owner's Handbook Manual page 271

Keep to an appropriate speed when towing a
trailer. If the trailer starts to snake, brake im-
mediately and make the necessary steering
corrections as carefully as possible.
WARNING
The tyre inflation pressure must be adapted
because of the increased axle load in trailer
operation. Driving with inadequate tyre infla-
tion pressure can damage the tyres. There
is a risk of accident or material damage. Do
not exceed a speed of 100 km/h / 60 mph.
Increase the tyre inflation pressure of the
towing vehicle by 0.2 bar. Note the maximum
possible tyre inflation pressure stated on the
tyre.
Upward gradients
General
In the interest of safety and to avoid holding
up other traffic flow, do not attempt to climb
upward gradients steeper than 12 % in trailer
operation.
If higher trailer loads have been subsequently
approved, the limit is 8%.
Driving off on upward gradients
The parking brake is automatically released
when the accelerator pedal is operated.
To prevent the vehicle from rolling back when
driving off, use the parking brake.
1. Shortly before driving off, pull and
release the switch.
The parking brake is engaged.
2. To drive off, press the accelerator pedal
with sufficient force.
Online Edition for Part no. 01405A5E758 - VI/22
Trailer operation
Downhill gradient
On downward gradients, a car/trailer combina-
tion tends to start snaking movement earlier.
Before the downhill gradient, shift down man-
ually to the next-lowest gear and drive down-
hill slowly.
Change gear using shift paddles or selector
lever position D/L, depending on the equip-
ment.
High loads and high outside
temperature
NOTICE
On long journeys with high trailer loads, a
high outside temperature and a low fuel tank
capacity, the fuel system can overheat lead-
ing to reduced engine output. There is a risk
of material damage. Refuel in good time. On
long journeys with high trailer loads and a
high outside temperature, make sure that the
fuel tank is more than 1/4 full.
Trailer Stability Control
Principle
Trailer Stability Control assists in intercepting
trailer snaking movements.
The system detects snaking movements and
promptly brakes the vehicle so that the vehicle
speed falls to below the critical speed range
and the outfit is stabilised.
General
The system can also activate in extreme driv-
ing situations when the trailer socket is occu-
pied without a trailer attached, for example
when using a bicycle carrier with lighting.
DRIVING HINTS
271